EP0597079A1 - Procede pour la mise a jour d'une ou de plusieurs memoires stockant les positions des utilisateurs permanents comprises dans un systeme telephonique mobile - Google Patents

Procede pour la mise a jour d'une ou de plusieurs memoires stockant les positions des utilisateurs permanents comprises dans un systeme telephonique mobile

Info

Publication number
EP0597079A1
EP0597079A1 EP93913695A EP93913695A EP0597079A1 EP 0597079 A1 EP0597079 A1 EP 0597079A1 EP 93913695 A EP93913695 A EP 93913695A EP 93913695 A EP93913695 A EP 93913695A EP 0597079 A1 EP0597079 A1 EP 0597079A1
Authority
EP
European Patent Office
Prior art keywords
database
vlr
hlr
updating
mobile station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93913695A
Other languages
German (de)
English (en)
Other versions
EP0597079B1 (fr
Inventor
Jörgen MOBERG
Jörgen LANTTO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of EP0597079A1 publication Critical patent/EP0597079A1/fr
Application granted granted Critical
Publication of EP0597079B1 publication Critical patent/EP0597079B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/04Registration at HLR or HSS [Home Subscriber Server]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/06Registration at serving network Location Register, VLR or user mobility server

Definitions

  • the present invention relates to a method in conjunction with updating of one or more HLR-databa ⁇ es which are included in a GSM- type mobile telephone system, wherein updating of such a database is requested by transmitting to a number of VLR-databases a special signal which identifies the HLR-database concerned.
  • a GSM-network includes two types of net databases, HLR (Home Location Register) and VLR (Visitor Location Register) .
  • HLR Home Location Register
  • VLR Visitor Location Register
  • a network will normally include several HLRs and several VLRs.
  • each HLR-database has stored therein all permanent data for those subscribers, i.e. those mobile stations, which belong to this particular HLR.
  • the telephone number of the mobile stations and information concerning additional services which are included in the subscription are examples of such data.
  • the active status of the additional services and information which discloses in which VLR-database a respective mobile station is registered at that particular moment are also stored in HLR.
  • the permanent data stored in HLR is secured by also storing the data in an external medium with the aid of "backup" .
  • each VLR-database infor ⁇ mation which discloses the whereabouts of respective mobile stations that are registered in a particular VLR at that par ⁇ ticular time.
  • Each VLR also contains a copy of the subset of all subscriber data that is contained in HLR and is relevant to this VLR. This subset is obtained from HLR in conjunction with a new mobile station entering the area covered by a VLR, whereupon data is signalled from HLR to VLR with the aid of CCITT 7-signalling.
  • the described structure is highly vulnerable to errors and fault in the network, caused for instance by restarts in HLR or VLR an also by signalling associated errors. Consequently, there hav been defined within GSM standardized work procedures for restorin data in these so-called node types in the most robust way pos sible, so as to avoid an error spreading to several nodes an resulting in breakdowns in the network.
  • VLR-database When a VLR-database has lost its data for some reason or another, the VLR will update its data autonomously, by signalling backward and forwards between itself and those mobile stations which ar located within the area covered by this particular VLR. This mean that those HLR-databases to which the mobile stations belong will not be affected immediately by a restart in a VLR. Data i collected from each individual HLR upon the next radio contac with a mobile station which belongs to this HLR.
  • HLR- database concerned informing all VLR-databases that this par ⁇ ticular HLR has been restarted and needs to be updated with ne data. This is effected with the aid of a "Reset" operation, which is signalled over the CCITT 7-network.
  • Certain other data is updated at the same time, although this data is less important than the data which discloses to which VLR the mobile stations belong. It can also be mentioned that when updating HLR, a certain amount of data is transmitted from HLR to VLR, for instance subscriber data which applies to the mobile station.
  • the object of the present invention is to provide a method of procedure in conjunction with updating one or more HLR-databases, so that the losses in the process capacity of the VLR-databases will be smaller than they would otherwise be when practicing the aforesaid known method. In brief, this is achieved in the fol lowing way:
  • the time points at which Reset-messages are received and also t time points when radio contact is made with different mobil stations are registered in VLR.
  • a search is made in VLR with th intention of learning whether or not the mobile station belongs t a HLR that has requested updating. If such is the case, the tim point of the preceding radio contact between VLR and the mobil station is compared in VLR with the time at which the Reset message was received, wherein HLR is updated with data from V when the preceding radio contact took place earlier than the tim at which the Reset-message was received.
  • the invention is characterized by the features set forth in th following Claims. -
  • Figure 1 illustrates tw tables which contain certain information which is stored in a VLR database in accordance with the invention?
  • Figure 2 il lustrates an example of a course of events that occur whe signalling to and from a VLR-database.
  • Figure 1 shows two tables, 12 and 13, which are enclosed by rectangle 11 which represents a VLR-database.
  • the table 1 contains certain subscriber data which is stored in the VLR- database, in accordance with the invention.
  • the time at which a new radio contact occurs between the VLR-database and any mobile station that is located within the area covered by this VLR is registered and stored in VLR. This is symbolized in the Figure by the identity of the mobile station having been written into the left column of table 12, and by the time having been written into the right column of said table.
  • the left column of the table includes the references MSI, ... ,MSn, ... , which thus represent the identity , of different mobile stations.
  • the right column of the table includes the references t:MSl, ... ,t:Msn, ... , which repre ⁇ sent the times at which radio contacts were made with the mobile stations in the left column.
  • the time, t:MSl is updated in the VLR-database, so that the stored time information will always correspond to the latest radio contact between the VLR-database and the mobile station in question.
  • HLR-databases The right column of table 13 includes references t:HLRl, ... ,t:HLRn, ... , which represent the times at which Reset- messages were received from the HLR-databases in the left column.
  • the time point, t:HLRl is updated so that the time infor ⁇ mation stored in the VLR-database will always relate to the last received Reset-message from the HLR-database in question.
  • the HLR-database is updated in the same manner a though an earliest preceding radio contact had been registered a a time earlier than the time of receiving the Reset-message.
  • Figure 2 illustrates an example of a course of events concernin a reciprocal signalling process, to and from a VLR-database.
  • Th Figure includes a time axis on which five time points, tl-t5, hav been marked.
  • radio contact takes place betwee VLR and a mobile station MSI, which is symbolized with th reference sign MSI above the time axis at time point tl.
  • MSI i assumed to belong to the HLR-database HLR1.
  • a search is then mad in the VLR-database in order to ascertain whether or not a Reset message has been received from HLR1. In this example, it has bee assumed that this is not the case, and HLR1 is therefore no updated.
  • VJ R receives a Reset-message from HLR1, which i symbolized with the reference sign HLR1.
  • HLR1 which i symbolized with the reference sign HLR1.
  • t3 a new radi contact is made between VLR and MSI.
  • a search is again made in VLR in order to ascertain whether or not a Reset-message has bee received from HLR1, which this time is established to be the case
  • the time point tl of the earliest preceding radio contact with MS is then compared-with the time point t2 at which the Reset-messag was received. Since tl is earlier than t2, updating is carried ou in this particular case.
  • t4 a radio contact is made with mobile station MS2, which is assumed not to belong to a HLR whic has requested updating.
  • the losses in the processor capacity of th VLR-database will be relatively small when practicing th inventive method. This is because the search effected in eac individual VLR to establish which mobile stations are of ref with respect to the updating of a HLR-database is spread-out ove time, instead of requiring each VLR to search through its sub scriber register with each received Reset-message.

Abstract

Procédé relatif à la mise à jour d'une ou de plusieurs mémoires stockant les positions des utilisateurs permanents dans un système téléphonique mobile du type GSM. La mise à jour d'une mémoire contenant les positions des utilisateurs permanents (HLR1) est demandée par l'envoi d'un message dit message de réinitialisation, qui identifie la mémoire des positions des utilisateurs permanents concernée, à un nombre de mémoires stockant les positions des utilisateurs occasionnels (11). Les pertes de capacité de traitement des mémoires stockant les positions des utilisateurs occasionnels sont relativement faibles pour les raisons suivantes: les moments (t:HLR1) auxquels les messages de réinitialisation ont été envoyés et les moments (t:MS1) auxquels les contacts radio ont été établis avec différentes stations mobiles (MS1) sont enregistrés dans chaque mémoire stockant les positions des utilisateurs occasionnels. Pour chaque contact radio établi entre une mémoire stockant les positions des utilisateurs occasionnels et une station mobile, une recherche est faite dans la mémoire stockant les positions des utilisateurs occasionnels, ladite recherche ayant pour but de vérifier que la station mobile appartient à une mémoire stockant les positions des utilisateurs permanents pour laquelle la mise à jour a été demandée. Si tel est le cas, le moment du premier contact radio précédent entre la mémoire des positions des utilisateurs occasionnels et la station mobile est comparé dans la mémoire des positions des utilisateurs occasionnels avec le moment auquel le message de réinitialisation a été reçu, la mémoire stockant les positions des utilisateurs permanents étant mise à jour avec des données provenant de la mémoire des positions des utilisateurs occasionnels si le contact radio précédent a été établi avant que le message de réinitialisation ait été reçu.
EP93913695A 1992-06-03 1993-05-06 Procede pour la mise a jour d'une ou de plusieurs memoires stockant les positions des utilisateurs permanents comprises dans un systeme telephonique mobile Expired - Lifetime EP0597079B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9201723A SE470326B (sv) 1992-06-03 1992-06-03 Förfarande i samband med uppdatering av en eller flera HLR- databaser som ingår i ett mobiltelefonisystem
SE9201723 1992-06-03
PCT/SE1993/000397 WO1993025051A1 (fr) 1992-06-03 1993-05-06 Procede relatif a la mise a jour d'une ou de plusieurs memoires stockant les positions des utilisateurs permanents comprises dans un systeme telephonique mobile

Publications (2)

Publication Number Publication Date
EP0597079A1 true EP0597079A1 (fr) 1994-05-18
EP0597079B1 EP0597079B1 (fr) 1998-03-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93913695A Expired - Lifetime EP0597079B1 (fr) 1992-06-03 1993-05-06 Procede pour la mise a jour d'une ou de plusieurs memoires stockant les positions des utilisateurs permanents comprises dans un systeme telephonique mobile

Country Status (22)

Country Link
US (1) US5490201A (fr)
EP (1) EP0597079B1 (fr)
JP (1) JP3235837B2 (fr)
KR (1) KR100289375B1 (fr)
CN (1) CN1044957C (fr)
AU (1) AU660825B2 (fr)
BR (1) BR9305535A (fr)
CA (1) CA2112971C (fr)
DE (1) DE69317357T2 (fr)
DK (1) DK0597079T3 (fr)
ES (1) ES2115063T3 (fr)
FI (1) FI108508B (fr)
GR (1) GR3026596T3 (fr)
HK (1) HK1009666A1 (fr)
MX (1) MX9303189A (fr)
NO (1) NO308440B1 (fr)
NZ (1) NZ253369A (fr)
SA (1) SA93130572B1 (fr)
SE (1) SE470326B (fr)
SG (1) SG45170A1 (fr)
TW (1) TW278290B (fr)
WO (1) WO1993025051A1 (fr)

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Also Published As

Publication number Publication date
FI940490A0 (fi) 1994-02-02
NO940300L (no) 1994-01-28
CN1081033A (zh) 1994-01-19
HK1009666A1 (en) 1999-06-04
US5490201A (en) 1996-02-06
DK0597079T3 (da) 1998-12-07
FI108508B (fi) 2002-01-31
KR100289375B1 (ko) 2001-05-02
SA93130572B1 (ar) 2004-08-14
SE9201723D0 (sv) 1992-06-03
CN1044957C (zh) 1999-09-01
MX9303189A (es) 1994-08-31
SE470326B (sv) 1994-01-17
NZ253369A (en) 1995-10-26
JPH06509925A (ja) 1994-11-02
NO940300D0 (no) 1994-01-28
TW278290B (fr) 1996-06-11
DE69317357T2 (de) 1998-07-02
FI940490A (fi) 1994-02-02
AU660825B2 (en) 1995-07-06
SG45170A1 (en) 1998-01-16
WO1993025051A1 (fr) 1993-12-09
SE9201723L (sv) 1993-12-04
CA2112971A1 (fr) 1993-12-09
BR9305535A (pt) 1995-12-26
CA2112971C (fr) 2003-04-15
EP0597079B1 (fr) 1998-03-11
JP3235837B2 (ja) 2001-12-04
DE69317357D1 (de) 1998-04-16
NO308440B1 (no) 2000-09-11
ES2115063T3 (es) 1998-06-16
GR3026596T3 (en) 1998-07-31
AU4363593A (en) 1993-12-30

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